<!-- 父级页面:控制除登录页以外所有页面共有的左侧菜单栏与顶部条 -->
<template>
  <div style="display: flex;">
    <!-- 左侧菜单栏 -->
    <div :style="{width:(isCollapse ? '64px' : '208px')}">
      <el-menu
          background-color="#3c82f5"
          style="width:100%;height:100vh;"
          text-color="#fff"
          active-text-color="#ff0"
          :collapse="isCollapse"
          unique-opened
          router
          :collapse-transition="false"
      >
        <!-- 菜单的顶部条 -->
        <el-row style="padding-top: 10px;">
          <el-col :span="1"></el-col>
          <el-col :span="6" style="padding-left: 7px;">
            <el-avatar src="/imgs/admin/logo.png" style="width: 35px;height: 35px;"></el-avatar>
          </el-col>
          <el-col :span="isCollapse ? 0 : 16">
            <span style="color:#fff;position:relative;top:8px;left:2px;">LBS智慧营销平台</span>
          </el-col>
        </el-row>
        <el-sub-menu index="1">
          <template #title>
            <el-icon style="font-size: 21px;"><House /></el-icon><span>首页</span>
          </template>
        </el-sub-menu>
        <el-sub-menu index="2">
          <template #title>
            <el-icon style="font-size: 21px;"><Collection /></el-icon><span>店铺管理</span>
          </template>
          <el-menu-item index="/store">店铺列表</el-menu-item>
          <el-menu-item index="/store">二维码管理</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="3">
          <template #title>
            <el-icon style="font-size: 21px;"><Share /></el-icon><span>内容管理</span>
          </template>
          <el-menu-item index="/article">文章分类</el-menu-item>
          <el-menu-item index="/articleList">文章列表</el-menu-item>
          <el-menu-item index="/articleCreate">推文创作</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="4">
          <template #title>
            <el-icon style="font-size: 21px;"><User/></el-icon><span>用户管理</span>
          </template>
          <el-menu-item index="/user">用户列表</el-menu-item>
          <el-menu-item index="/userGroup">人群管理</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="5">
          <template #title>
            <el-icon style="font-size: 21px;"><Location/></el-icon><span>营销管理</span>
          </template>
          <el-menu-item index="/activity">活动管理</el-menu-item>
          <el-menu-item index="/coupon">优惠卷管理</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="6">
          <template #title>
            <el-icon style="font-size: 21px;"><Place/></el-icon><span>触达管理</span>
          </template>
          <el-menu-item index="/message">定时消息</el-menu-item>
          <el-menu-item index="/messagePush">定时推送</el-menu-item>
        </el-sub-menu>
      </el-menu>
    </div>
    <!-- 右侧顶部条与主体内容(可变区域) -->
    <div :style="{width:(isCollapse ? 'calc(100% - 64px)' : 'calc(100% - 208px)')}">
      <!-- 右侧顶部条 -->
      <el-header style="height:10vh;background-color:#fff;padding-top: 22px;">
        <el-row :gutter="20">
          <!-- 折叠菜单栏图标按钮  -->
          <el-col :span="22">
            <el-icon style="font-size:20px;" @click="changeCollapse"><Expand/></el-icon>
          </el-col>
          <!--    搜索图标-->
          <el-dropdown trigger="click">
            <div class="user-info">
              <el-icon style="font-size: 20px; margin-right: 20px;" @click="handleSearch">
                <Search />
              </el-icon>
              <el-icon style="font-size: 20px; margin-right: 20px;" @click="handleNotify">
                <Bell />
              </el-icon>
              <el-icon style="font-size: 20px; margin-right: 20px; color:green" @click="handleHelp"><Star /></el-icon>
            </div>
          </el-dropdown>
            <el-dropdown trigger="click" style="position: absolute;right: 20px;">
                <span style="font-size: 19px;font-weight: bold;">
                  <el-icon ><arrow-down /></el-icon></span>
              <!-- 下拉菜单 -->
              <template #dropdown>
                <el-dropdown-menu>
                  <el-dropdown-item @click="logout">退出登录</el-dropdown-item>
                </el-dropdown-menu>
              </template>
            </el-dropdown>
        </el-row>
        <!-- 面包屑导航  -->
        <el-breadcrumb separator="/" style="position: relative;top: 20px;">
          <el-breadcrumb-item>首页</el-breadcrumb-item>
          <el-breadcrumb-item v-for="item in breadcrumb">{{item}}</el-breadcrumb-item>
        </el-breadcrumb>
      </el-header>
      <!-- 右侧主体内容(可变区域) -->
      <el-main style="height:90vh;padding: 0;overflow-y: auto;">
        <router-view/>
      </el-main>
    </div>
  </div>
</template>
<script setup>
import {onMounted, ref} from "vue";
import {useRoute, useRouter} from "vue-router";
import {ElMessage} from "element-plus";

//定义变量用来控制左侧菜单栏是否折叠
const isCollapse = ref(false);
//定义修改左侧菜单栏折叠的方法
const changeCollapse = () => {
  isCollapse.value = !isCollapse.value;
}
//获取当前登录的用户数据
const user = ref(getUser());

//定义退出登录的方法
const logout = ()=>{
  if(confirm('您确认要退出吗?')){
    //清空localStorage中的user数据
    localStorage.removeItem('user');
    //跳转至登录页
    window.location.href = '/login';
    //也需要将刚刚取出的登录人数据清除
    user.value = '';
  }
}

//定义对象用来维护路由path与面包屑的对应关系
let map = {
  '/store':['店铺管理','店铺列表'],
  // '/store':['店铺管理','二维码管理'],
  '/article':['内容管理','文章分类'],
  '/articleList':['内容管理','文章列表'],
  '/articleCreate':['内容管理','推文创作'],
  '/user':['用户管理','用户列表'],
  '/userGroup':['用户管理','人群管理'],
  '/activity':['营销管理','活动管理'],
  '/coupon':['营销管理','优惠卷管理'],
  '/message':['触达管理','定时消息'],
  '/messagePush':['触达管理','定时推送']
};
//定义对象用来保存面包屑当前展示的值
const breadcrumb = ref([]);
//useRoute()是Vue提供的一个方法,用于管理当前组件的路由状态,获取当前路由对象
const route = useRoute();
/* 一进入页面立即加载 */
onMounted(()=>{
  updateBreadcrumb(route);
})
//定义更新面包屑导航值的方法
const updateBreadcrumb = (route)=>{
  //根据当前路由的path属性,从map对象中获取对应的面包屑值
  const path = route.path;
  //根据当前的path把对应的面包屑数组取出来
  breadcrumb.value = map[path];
  console.log(breadcrumb.value);
}
//获取路由守卫,监听路由,只要path发生了改变(包括点击左侧菜单栏),就立即更新面包屑的值,再跳转
const router = useRouter();
router.beforeEach((to,from,next)=>{
  updateBreadcrumb(to);
  next();
})
const handleSearch=()=>{
  ElMessage.success('功能开发中...');
}
const handleNotify=()=>{
  ElMessage.success('功能开发中...');
}
const handleHelp=()=>{
  ElMessage.success('功能开发中...');
}

</script>